Here is a list of 10 fun facts about the sport of tennis which are sure to make your eyes widen in surprise.
P.S. We haven?t included the marath ...

#4 The tennis ball only stays in play for 20 minutes in a standard match

As most of us have seen, a proper competitive tennis match lasts for about 2 hours on an average, or even more. But did you know that the tennis ball remains in action (i.e., in a state of movement) for only about 20 minutes in a standard 2.5 hours match? The pros certainly spend a lot of time taking breaks in the middle of a match!

World number four Alexander Zverev has said the majority of players on the ATP Tour would welcome the help of Roger Federer, should the 19-time Grand Slam champion decide to become a coach after he retires from playing.